Made from a BPA - free premium silicone compound and a stainless steel cap that is functional, durable and LEAK-PROOF. This foldable water bottle can reserve 550ml/18oz liquid with only 198g in weight. It can be folded from 9.8 inch to 5.5 inch in height. Collapsible and lightweight design allows you save 50% space, portable and easier to storage.Equipped with a aluminium alloy carabiner,you can hook it to backpack or gym bag, carry it everywhere.Ideal for travel, gym,running, camping, fishing,climbing, yoga, beach, outdoor sports. The price for 10k pcs is based on shipping by sea. Custom with your artwork now!